Radiator



R. A. SELLMAN, DECD. E. M. SELLMAN, ADMINISTRATRIX- RADIATOR.

APPLICATION FILED APR.23.1920.

1,41 1,877. Patented Apr. 4, 1922.

"II II a I mml,

UNITED STATES PATENT OFFlfiE.

RAY A. SELLMAN, 0F GRAND RAPIDS, MICHIGAN; EDNA M. SEILILJMIAII- ADMINISTRA- T RIX OF SAID RAY A. SELLMAN, DECEASED.

RADIATOR.

Specification of Letters Patent.

Patented Apn i, 1922.

Application filed April 28, 1920. Serial No. 375,936.

To all Gill/Z0771 it may concern:

Be it known that I, RAY A. Seamus, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements inltadiators, of which the following is a specification.

The present invention relates to radiators for motor vehicles and the like; and'its object is, generally, to provide an improved radiator for cooling the water supplied to the water jacket of the motor; and more particularly, to provide such a radiator whose radiating surface is very large rela tively to its water containing capacity; and further, to provide such a radiator which will not be injured by the freezing of a the water therein contained; and further, to pro vide improved methods of construction of such radiators.

These and any other objects hereinafter tion of the same, taken on a plane corre-' sponding to line 22 of Figure 1, but showing the opposite walls of the hollow watercontaining members sprung apart; and

Figure 5 is a cross-sectional view of a modified construction of the radiator, taken on a plane corresponding to the cross sectioning plane in which Figure 2 is shown.

In the embodiments of the invention chosen for illustration by the drawings and for detailed description in the body of this specification, the radiator, designated generally 1, comprises a plurality of vertically extending hollow members 2, spaced apart to provide air passages therebetween, the course of the air through such passages being indicated by curved arrows These hollow members communicate at their open upper and lower ends 10, 11 with the upper and lower water chambers or passages 3, 4-

respectively, through which and through sald members 2 the iwitericirculates by suitable connections to and from the water jacket of the motor (not shown) to coolthe the 1 adjacent hollow member.

.In Figure 5 a i modified 1 construction is shown, wherein the opposite walls 5, 6 of the hollow members 2 are so disposed, that the concave portions 7' of one wall 5 of each hollow member are disposed in staggered relation to the concave portions of the opposite wall 6 of the same hollow member. It will be seen that by either of said constructions, the radiating surface of the hollow members is very large relatively to their water-containing capacity, and that such surface relatively to such capacity is even greater in the modified construction shown in Figure 5 than in the construction shown in the other views.

The hollow members as shown in the sevoral views are preferably made of a pair of metal sheets, each of which is bent into the series of concave portions shown, the sheets being joined (as by soldering or brazing) at their opposite edges 12, parallelly with said concave portions. It will be seen that the opposite side walls of the hollow members may be forced apart, intermediate their joined edges 12 (as seen in Figure 4), by the expansion of freezing water therein without injury; and when such expansion is relieved, they will spring back into original position, if the sheets are springable, as is desirable.

It will be seen that the air in passing through the passages between the hollow members is, by reason of the shape and the interrelatiye disposition of said members sides, directed first to one side and then to the other, thus particularly well effecting the cooling of the water; and that such cffeet is heightened by the arcuate shape of the concave, portions of the sides.

The invention bein intended to be pointed out in the claims, is not to be limited to or by details of construction of the particular embodiment thereof illustrated by the drawings or hereinbefore described,

1. In a structure of the character described; a ,plurality of hollow members spaced apart to provide an air passage therebetween, the opposite walls of each of said members comprising a series of portions concave to the1r meeting point, the concave ortions of adjacent walls of adjacent memrs being disposed in interrelatively staggered relation.

2. In a structure of the character described; a hollow member eachof whose opposite walls comprises a series of concave portions vertically arranged, said portions of one wall being disposed in staggered relation to said portions of the other wall.

3. In a' structure of the character described; a plurality of hollow members spaced apart to provide an air passage therebetween, the opposite walls of each of said members comprising a series of concave portions, and portlons of one wall of each memher being disposed in staggered. relation to said portions of the other wall of said memher, the concave portions of adjacent walls of adjacent members being disposed in interrelatively staggered relation.

4. In a structure of the character described; a plurality of spaced apart hollow members non-intercommunicating at their sides to provide an uninterrupted air passage therebetween, the opposite walls of each of said members comprislng a series of portions concave to their meeting point, the concave portions of adjacent walls of adjacent members being disposed in interrelatively staggered relation. 1 5. In a structure of the character described; a hollow member having opposite walls each of which is formed by bending a resilient sheet of metal into a series of portions concave to their meeting point, said sheets being joined at their opposite edges parallel with said portions and being adapted to spring toward and away from each other intermediate said edges.

In testimon my hand at rand Rapids, Michigan, this 21st day of April, 1920.

RAY A. SELLMAN.

whereof I have hereunto set "air- 

